When a cavity is detected the most conservative way to address it is by placing a filling.
What are fillings?
A filling is used to restore your tooth back to its normal function and shape after it has been damaged by tooth decay. By replacing and closing off the space where bacteria can enter, you get a full chewing surface again and help prevent further decay.
What type of filling is best?
Composite fillings are made up of a resin material and have the ability to give a natural appearance by matching your tooth color. This is great when restoring the front teeth. In most cases these are the types of fillings that are used to restore cavities.
Amalgam fillings are made up of a metal alloy and due to their dark color, they are often not used in visible areas. They are strong, have a high resistance to wear, and are occasionally still the best option to repair your tooth.
Why does the doctor sometimes say fillings aren’t an option?
A filling needs a lot of tooth structure as support to hold it in place. When a cavity is really large or a new cavity appears under an existing filling, a traditional filling may not be enough to address your need. In these cases, crowns are usually recommended to give the tooth the support it needs.